Question

normally one embryo develops in one seed but when an orange seed is squeezed many embryos of different shapes and sizes are seen .why?

Answer 1

An ovule generally has a single embryo sac formed form a megaspore through reduction division but in an Orange fruit because of the phenomenon of polyembryony, the nucellar cells surrounding the embryo sac starts dividing and hence results more than one embryo sac from a megaspore and therefore embryos of different size and shape were seen.